helloi have installed openwebmail(OWM). i can send internal and external mails. but i could not receive.?????then, OWM use real users. how can i oblige it to handle virtual users????

this is the OWM config file.what shall i modify so that i could receive mails.thanks very much## Open WebMail configuration file## This file contains just the overrides from defaults/openwebmail.conf# please make all changes to this file.## This file sets options for all domains and all users.# To set options on per domain basis, please put them in sites.conf/domainname# To set options on per user basis, please put them in users.conf/username##releasedate 20050106domainnames autoauth_module auth_unix.pl # it could be also auth_pop3.pl, auth_pam.plmailspooldir /var/spool/mailow_cgidir /var/www/cgi-bin/openwebmailow_usersdir /home/usersow_cgiurl /cgi-bin/openwebmailow_htmldir /var/www/data/openwebmailow_htmlurl /data/openwebmaillogfile /var/log/openwebmail.logow_sessionsdir /home/users/sessions